Question

Which equation represents a proportional relationship?

a) y = -3x + 2
b) y = 3x
c) y = 2(x + 1)
d) y = 1

Answer 1

Option b) y = 3x represents a proportional relationship.

Step-by-step explanation:

A proportional relationship is one where two variables are directly related and can be expressed as y = kx, where k is a constant. Looking at the given equations, option b) y = 3x represents a proportional relationship. In this equation, the variable y is directly proportional to x, as the value of y increases by a factor of 3 for every unit increase in x.